Pipe coupling



June 24 1924. 1,498,855

H. PARKER v PIPE COUPLING I Filed Oct. 22. 1921 FJgJ.

are drawn to ether b atented de 2d, 1924.

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HOWARD PARKER, 01 BERLIN, NEW

i ="SHIRE, ASSIGNOR TO BROWN COANY,

' or BE LIN, new nsmnce, a conronarron or mama.

. rrrn oourmrto.

Application filed October 22, 1921. Serial no. 509,457.

which the following is a specification.

This invention relates to pipe couplings, such as shown in my co.p'ending application Serial No. 414,400, filed October 4, 1920, and has for its object to provide against displacement of the sleeves relative to the respective pipes after the sleeves have been properly adjusted thereon, as hereinafter described more in detail.

In the accompanying drawing,-

Figure 1 is a side elevation partly in sec, tion of a coupling constructed in accordance with the present invention; v

Figure 2 is a side elevation of one of. the sleeves forming a part of the coupling shown in Fig. 1; and

Figure 3 is an end view of said sleeve.

Referring to the drawings, a, 6, denote the pipes or tubes which are to be connected together, and which may be formed of pulp, and c is a gasket interposed between the ends of the pipes. If desired, the ends of the pipes may be telescoped into a member d, shown in Fig. 1, for the purpose of keeping the pipes in proper alinement. 10, 10, denote sleeves or ring-like members preferably formed of pulp and adjustable lengthwise on the respective pipes. The opposing ends of eachsleeve are oppositely tapered. Extending from each end of each sleeve to within a short distance, of the other end are longitudinally disposed slots 11, referably alternately arranged. Fitting a out each tapered end of each sleeve isa collar '12, the opening'in which is tapered correspondingly to the tapered ends of the sleeves. These collars are connected together by bolts 13 for moving the collars towards each other and thus causing the tapered ends of the sleeves to contract and tightly gri the pipes. The sleeve 10, the collars therea out and the bolts 13 on each pipe form a unit. These units rods 14. The arrangement so ar described is illustrated and claimed in my said'co-pending application.

In accordance withthe present invention,

A I provide the extreme or outer end of each sleeve with a shoulder 20 against which the extreme or ou tside collars 12 are adapted to abut. Due to the interngagement of the outside collars against'these shoulders, displacement of the adjusted sleeves on the pipes a, b, is guarded against when the tie 'rods 14: are tightened. up to draw the two units together. In the absence of these shoulders, I have found that after the units are assembled on the respective pipes, upon tightening the nuts of the tie rods the extreme or outside collars are drawn together resulting in loosening the bolts 13 so that the elfectiveness of the inner collars inv clamp-.

ing the sleeves against the pipes is interfered with and the result is the sleeves mayslide relative to thepipes. By providing the shoulders 20, it will be seen that the extreme collars cannot be drawn towards each other without also movin the sleeves, and thus the distance betweent e collars on each pipe is not disturbed and the inner collar and the outer collar on each sleeve are al-' ways efiective in clamping both endspf. each sleeve against the respectlve pipes. Should it be found that the ends of thepipes were not end to end as tightl as desired, and the bushing 10 would slip i the tie rods 14 were further tightened, the-shortbolts 13 would first be tightened enough to stop the bushing from slip ing and, then, due to the shoulders on t e outerfends of the sleeves,

the distance between the heads and nuts'of v the tie rods 14 would not be materially changed when the nuts on the tie rods are tightened up to bring the ends of the pipes under the required pressure against one another. 7

It is, of course, obvious that my invention is susceptible of various modifications and changes, the present disclosure being by way of illustration only. 1 I claim as my invention 2- 1. A pipe coupling for connecting a pair of pipes and comprising a contractible sleeve about each pipe, a collar fitting about each end of each sleeve, means for limiting the extent of movement of one of said collars longitudinally of each sleeve, means for ing i'eletive movement themloetvveen, and means for dzcevving the collars on the opposite ends of said sleeve towards each othen, 3. A pipe coupling for coecting a, pein of pipes comprising at contrectihle sleeve ehent each pipe eech sleeve having its opposite ends oppositely tepeted a collar fitting ehont each end of eech sleeve and one of said collens having limited movement relative to its sleeve, means for drevving the collars on eech sleeve towerds eech other, and tie rods connecting thecollers of the two sleeves.

l. A pipe coupling for connecting s pain of pipes and comprising a contrectible sleeve about each pipe, each sleeve heving a shouldeiadjacent one end and heving its other end tepened e collee flitting ehont eech end s neeeeee ol? eech sleeve end one of said collars losing adapted to shut seid shoulder, means lot drawing the collars of each sleeve towards each other and tie rods connecting the SEX-1 trenie collars of the two sleeves.

5 A pipe coupling connecting e pipes end comprising e conti-ectilole sleeve about each pipe, each sleeve being longitudinally slotted end having oppositely tapered. ends one oi which is provided with e shoulden, e collar fitting eloont each end of each. sleeve with one of seid collars engaging said shoulder means for: drawing the collei's on each. sleeve towards each other and tie rods connecting the extvenie collars.

t-tovve en PARKER 

